In the Aug. 23 "Summary Judgment," Blake Wilson misspelled Talib Kweli's name.

In the Aug. 21 "Explainer," Michelle Tsai wrote that the Utah miners could communicate via low-frequency waves that travel slowly through the earth to deliver small amounts of data. The waves travel at the speed of light, but their low frequency limits the rate at which they can transmit data.

In the Aug. 21 "Hot Document," Bonnie Goldstein repeated an erroneous report from the Web site Publishers' Marketplace stating that a Hollywood agent named Joel Gotler was brokering film and TV rights to O.J. Simpson's book, If I Did It. Gotler was approached to represent the book, but he declined.

In the Aug. 20 "Press Box," Jack Shafer mistakenly stated a famous New York Post headline as "Headless Man in Topless Bar." The correct headline is "Headless Body in Topless Bar."

In the Aug. 16 "Explainer," Michelle Tsai asserted that banks use their government bonds as collateral for loans from the Fed. This is incomplete; they also use bonds and mortgage-backed securities issued by Freddie Mac, Fannie Mae, or Ginnie Mae. The story also said banks are required by law to maintain 10 percent of deposits as reserves. According to the Monetary Control Act of 1980, they must hold between 8 percent and 14 percent of their checking (not total) deposits in reserve, as specified by the Fed.

The Aug. 15 "Explainer," on the subject of lead paint, included a photograph of Batman toys manufactured by Mattel. The company did recall some Batman toys, but not for lead paint.

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